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Service manual
Appendix
LMU (Specialist Engineer Parameters)
For Access to the next level (whilst in Parameters 516 727)
Keep program keys 1 (Down Button) and 2 (Up Button) pressed simultaneously for approx a further 5 secs. Ref page 22
Parameter
Name
Setting
Unit
Description
504
TkSmax
85
ºC
Maximum boiler setpoint temperature (>= "TkSmin" and <= 90
°C) must be at least 3 K less than for "TkMax"
505
TkS standard
80
ºC
Boiler setpoint at standard outside air temperature
506
TvSmin
20
ºC
Minimum flow setpoint temperature (>= 20 °C and <=
"TvSmax")
507
TvSmax
80
ºC
Maximum flow setpoint temperature ( >= TvSmin and <= 90°C)
521
dTkTrNenn
20
K
Delta T Control: flow and return at standard Outside air
Temperature (>= 2,5 K and <= maximum "dTkTrMax")
522
dTkTrMax
25
K
Delta-T-control: maximum differential of the supply/return
temperature at standard Ouside Air temperature
537
NqmodNenn
30
Speed level of boiler pump in design point of heating installation
("NqmodNenn" <= "QmodDrehzStufen")
538
NqmodMin
40
%
Minimum pump speed permitted for the heating installation
541
PhzMax
100
%
Maximum modulation rate in heating mode (>= "LmodTL" and
<= "LmodVL")
551
Kon
2
Constant for rapid power fluctuation without ambient effect
552
Hydraulic
System
6
Hydraulic system adjustment
553
KonfigHks
553
Configuration of heating circuit (position YX, X for heating circuit
1, Y for heating circuit 2 of LMU...)[ Value: 0 no room unit effect,
1 heating circuit 1 of room unit, 2 heating circuit 2 of room unit]
555
KonfigRg1
0010000
Installation options for: DHW priority, installation frost
protection, modem function, {room thermostat input, timer
switch}; ({} not LMU7...)
558
KonfigRg4
1000000
Installation options for: DHW thermostat, water pressure
sensor, function changeover valve outlet {heat demand Q8,
construction} ({} not LMU7...)
561
KonfigRg7
0001000
installation options for: Pump modulation, Regulator delay
596
ZeitAufZu
135
s
Operating time of mixer engine (time off / time on)
605
LPBAdrGerNr
1
LPB unit number of the LMU...
606
LPBAdrSegNr
0
LPB segment number of the LMU...
610
LmodVL_QAA
100
%
Setpoint operation: Modulation air in normal load, upper limit
modulation area
614
KonfigEingang
1
Installation options (function) of programmable input of the
LMU...-Base
615
Konfigoutlet
0
Installation options (function) of relay outlet K2 of the LMU...-
Base
618
KonfigEingangR
0
Installation options (function) of programmable input of relay
ClipIn
619
Konfigoutlet1R
0001010
Installation options function) of relay outlet 1 of the relay ClipIn
620
Konfigoutlet2R
0000001
Installation options (function) of relay outlet 2 of the relay ClipIn
For Access to the OEM level: Access Specialist Engineer Parameters as detailed above
Keep program keys 1 (Down Button) and 2 (Up Button) pressed simultaneously for approx 10 secs.
When asked for OEM code, Password = 1 (Down Button), 2 (Up Button), 4 (Plus Button), 3 (Minus Button), 4 (Plus Button)
43


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